2007-05-07 13:13:32 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Obviously it is full of holes (a.k.a. air sacks).
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...When air is pulled in through the nose and mouth it enters the trachea, then moves down to the broncus which divides into the left and right bronchial tubes. Each bronchial tube carries air into the lungs where it is divided into little air sacks called alveoli....
2007-05-07 13:17:59 · answer #1 · answered by Randy G 7 · 0⤊ 0⤋
Because the lung tissue is full of air sacs. The purpose of the air sacs is to increase the surface area contact with the capillaries that absorb the oxygen and release the carbon dioxin.
2007-05-07 20:19:37 · answer #2 · answered by JimGeek 4 · 0⤊ 0⤋
Lungs feel spungy because of (already stated) small mircoscopic air sacks. Our lungs need these air sacks in order to expand and contract. Also, our bodies are made up of 97% water, so they have water in the frame of the lungs (not the actual breathing inside part).
hope i helped!
2007-05-07 20:30:04 · answer #3 · answered by Lizzy 2 · 0⤊ 0⤋
I guess because they contain many structures called alveoli which are filled with air.
2007-05-07 20:35:47 · answer #4 · answered by Aeromina 2 · 0⤊ 0⤋
why are you asking if they are? have you poked at some lately?!?! where they animal or human lungs? lmao! i joke...
2007-05-07 20:23:32 · answer #5 · answered by geeahlove 1 · 0⤊ 0⤋
so they can expand and deflate
2007-05-07 20:17:34 · answer #6 · answered by Anonymous · 0⤊ 0⤋